<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${categorySubData.parentId}` }">{{ categorySubData.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ categorySubData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" 
        v-infinite-scroll="load" 
        :infinite-scroll-disabled="disabled" 
        infinite-scroll-delay="500"
      >
         <!-- 商品列表-->
         <GoodsItem v-for="good in goodList" :key="good.id" :goods="good">
         </GoodsItem>
         <div class="loading" v-if="loading">数据加载中...</div>
         <div class="more-data" v-if="noMore">亲，没有更多数据了</div>
      </div>
    </div>
  </div>
 
</template>

<script setup>
import { ref, onMounted} from 'vue'
import { useRoute } from 'vue-router'
import { _getCategorySub, _getGoodsList } from '@/apis/category'
import GoodsItem  from '../Home/components/GoodsItem.vue'
const categorySubData = ref({})
const route = useRoute()
const getCategorySub = async () => {
  const { data:res } = await _getCategorySub(route.params.id)
  categorySubData.value = res.result || {}
}
onMounted(()=>{
  getCategorySub()  
})
// 获取基础列表数据渲染
const goodList = ref([])
const reqData = ref({
  categoryId: route.params.id,
  page: 1,
  pageSize: 20,
  sortField: 'publishTime'
})
const getGoodsList = async () => {
  const {data:res} = await _getGoodsList(reqData)
  goodList.value = res.result.items || []
}
onMounted(() => {
  getGoodsList()
})
// 点击Tab栏切换
const tabChange = () => {
  reqData.value.page = 1
  getGoodsList()
}
// 数据列表加载
const disabled = ref(false)
const loading = ref(false)
const noMore = ref(false)
const load = async () => {
  loading.value = true
  reqData.value.page++
  const {data:res} = await _getGoodsList(reqData)
  goodList.value = [...goodList.value,...res.result.items] || []
  if (res.result.items.length === 0) {
    disabled.value = true
    loading.value = false
    noMore.value = true
  }
}
</script>

<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}
 
.sub-container {
  padding: 20px 10px;
  background-color: #fff;
 
  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
    .loading, .more-data {
      width: 100%;
      height: 20px;
      text-align:center;
      margin: 20px 0;
    }
  }
 
  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;
 
    img {
      width: 160px;
      height: 160px;
    }
 
    p {
      padding-top: 10px;
    }
 
    .name {
      font-size: 16px;
    }
 
    .desc {
      color: #999;
      height: 29px;
    }
 
    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }
 
  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
 
 
}
</style>